Super Saiyan Grade 3 is stated to be 10 times stronger than regular SSJ (or Grade 2 SSJ). FP SSJ Goku at 50% of his power shocked Vegeta and Trunks with his power, despite Trunks using said SSJ Grade 3
In the wiki page for
SSJ Grade 3, it was stated that: "Trunks acquires a force 10 times greater, but his movement skills are more limited.", which is likely referring to his Grade 2 SSJ form, which he used before powering up further
So: 100% FP SSJ Goku = 2 * 50% FP SSJ Goku >> SSJ Grade 3 Future Trunks >= 10 * SSJ Grade 2 Trunks (Post-HBTC) >> Semi Perfect Cell > 2 * Present Android 17 > Android Saga SSJ Vegeta > Future Android 17 = 489 Tenatons
That would mean that:
SSJ Grade 3 Future Trunks = 9,780 Tenatons = 4.091952e+43 joules = 0.4091952 Foe = High 4-C
100% FP SSJ Goku = 19,560 Tenatons = 8.183904e+43 joules = 0.8183904 Foe = High 4-C
Base Goku = 391.2 Tenatons = 4-C
That said, I would want if someone could translate what does this scan says in Spanish, as it might have more important information